diff --git a/sbt/src/sbt-test/source-dependencies/canon/build.sbt b/sbt/src/sbt-test/source-dependencies/canon/build.sbt
index 64c457108..6a00e6d3e 100644
--- a/sbt/src/sbt-test/source-dependencies/canon/build.sbt
+++ b/sbt/src/sbt-test/source-dependencies/canon/build.sbt
@@ -1,7 +1,7 @@
 import sbt.internal.inc.Analysis
 import complete.DefaultParsers._
 
-val checkIterations = inputKey[Unit]("Verifies the accumlated number of iterations of incremental compilation.")
+val checkIterations = inputKey[Unit]("Verifies the accumulated number of iterations of incremental compilation.")
 
 checkIterations := {
   val expected: Int = (Space ~> NatBasic).parsed
diff --git a/sbt/src/sbt-test/source-dependencies/ext/build.sbt b/sbt/src/sbt-test/source-dependencies/ext/build.sbt
index b93f974e1..b66d2a521 100644
--- a/sbt/src/sbt-test/source-dependencies/ext/build.sbt
+++ b/sbt/src/sbt-test/source-dependencies/ext/build.sbt
@@ -1,7 +1,7 @@
 import sbt.internal.inc.Analysis
 import complete.DefaultParsers._
 
-val checkIterations = inputKey[Unit]("Verifies the accumlated number of iterations of incremental compilation.")
+val checkIterations = inputKey[Unit]("Verifies the accumulated number of iterations of incremental compilation.")
 
 checkIterations := {
 	val expected: Int = (Space ~> NatBasic).parsed
diff --git a/sbt/src/sbt-test/source-dependencies/less-inter-inv-java/build.sbt b/sbt/src/sbt-test/source-dependencies/less-inter-inv-java/build.sbt
index 64c457108..6a00e6d3e 100644
--- a/sbt/src/sbt-test/source-dependencies/less-inter-inv-java/build.sbt
+++ b/sbt/src/sbt-test/source-dependencies/less-inter-inv-java/build.sbt
@@ -1,7 +1,7 @@
 import sbt.internal.inc.Analysis
 import complete.DefaultParsers._
 
-val checkIterations = inputKey[Unit]("Verifies the accumlated number of iterations of incremental compilation.")
+val checkIterations = inputKey[Unit]("Verifies the accumulated number of iterations of incremental compilation.")
 
 checkIterations := {
   val expected: Int = (Space ~> NatBasic).parsed
diff --git a/sbt/src/sbt-test/source-dependencies/less-inter-inv/build.sbt b/sbt/src/sbt-test/source-dependencies/less-inter-inv/build.sbt
index 64c457108..6a00e6d3e 100644
--- a/sbt/src/sbt-test/source-dependencies/less-inter-inv/build.sbt
+++ b/sbt/src/sbt-test/source-dependencies/less-inter-inv/build.sbt
@@ -1,7 +1,7 @@
 import sbt.internal.inc.Analysis
 import complete.DefaultParsers._
 
-val checkIterations = inputKey[Unit]("Verifies the accumlated number of iterations of incremental compilation.")
+val checkIterations = inputKey[Unit]("Verifies the accumulated number of iterations of incremental compilation.")
 
 checkIterations := {
   val expected: Int = (Space ~> NatBasic).parsed
diff --git a/sbt/src/sbt-test/source-dependencies/restore-classes/build.sbt b/sbt/src/sbt-test/source-dependencies/restore-classes/build.sbt
index 547d55a10..08931b91c 100644
--- a/sbt/src/sbt-test/source-dependencies/restore-classes/build.sbt
+++ b/sbt/src/sbt-test/source-dependencies/restore-classes/build.sbt
@@ -3,7 +3,7 @@ import complete.DefaultParsers._
 
 crossTarget in Compile := target.value
 
-val checkIterations = inputKey[Unit]("Verifies the accumlated number of iterations of incremental compilation.")
+val checkIterations = inputKey[Unit]("Verifies the accumulated number of iterations of incremental compilation.")
 
 checkIterations := {
   val expected: Int = (Space ~> NatBasic).parsed